n. a sleeping-berth, esp. a shelflike bed against a wall, e.g. in a ship.
Phrases and idioms:
bunk-bed each of two or more beds one above the other, forming a unit. bunk-house a house where workmen etc. are lodged.
Etymology: 18th c.: orig. unkn.
2.
n.
Phrases and idioms:
do a bunk Brit. sl. leave or abscond hurriedly.
Etymology: 19th c.: orig. unkn.
3.
n. sl. nonsense, humbug.
Etymology: abbr. of BUNKUM
Useful english dictionary. 2012.